<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Insert title here</title>

</head>
<body>
	<button type="button" class="btn btn-primary">55555</button>
	<script type="text/javascript">
	  var hostport=document.location.host;
	  alert(hostport);
	alert();
	</script>
</body>

</html>